气候变化领域集成服务门户(CCPortal): Provenance of detrital sediments in santa Barbara Basin, California, USA: Changes in source contributions between the Last Glacial Maximum and Holocene

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DOI	10.1130/B32035.1
	Provenance of detrital sediments in santa Barbara Basin, California, USA: Changes in source contributions between the Last Glacial Maximum and Holocene
	Napier T.J.; Hendy I.L.; Fahnestock M.F.; Bryce J.G.
发表日期	2020
ISSN	167606
起始页码	65
结束页码	84
卷号	132 期号:2021-01-02
英文摘要	Detrital terrestrial sediments preserved in near-shore marine basins bear distinctive geochemical identifiers that can be used to identify the on-shore sediment sources and sediment routing through time. Santa Barbara Basin (SBB), offshore of southern California, USA, contains a well-known, continuous, high-resolution Holocene flood record that can provide insights into the frequency and changes in on-shore sources across time for such events. Here SBB-adjacent stream bed sediments are characterized using mineralogical, elemental, and radiogenic strontium and neodymium isotopic compositions. Modern and Holocene SBB flood deposits and Last Glacial Maximum (LGM) sediments were similarly analyzed. The Southern Slopes of the Santa Ynez Mountains and Topatopa Mountains account for ~85% of SBB Holocene flood deposit sediments, as calculated from Sr-Nd isotope mixing models. During the LGM sea level low stand, the Southern Slopes contribution increased (to ≥90%), while relative sediment contribution from Santa Clara River diminished. This loss was likely compensated, however, by increased sediment flux from the Southern Slopes and the Channel Islands. © 2019 Geological Society of America.
语种	英语
来源期刊	Bulletin of the Geological Society of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/184874
作者单位	Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI 48109, United States; Department of Earth Sciences, University of New Hampshire, DurhamNH 03824, United States
推荐引用方式 GB/T 7714	Napier T.J.,Hendy I.L.,Fahnestock M.F.,et al. Provenance of detrital sediments in santa Barbara Basin, California, USA: Changes in source contributions between the Last Glacial Maximum and Holocene[J],2020,132(2021-01-02).
APA	Napier T.J.,Hendy I.L.,Fahnestock M.F.,&Bryce J.G..(2020).Provenance of detrital sediments in santa Barbara Basin, California, USA: Changes in source contributions between the Last Glacial Maximum and Holocene.Bulletin of the Geological Society of America,132(2021-01-02).
MLA	Napier T.J.,et al."Provenance of detrital sediments in santa Barbara Basin, California, USA: Changes in source contributions between the Last Glacial Maximum and Holocene".Bulletin of the Geological Society of America 132.2021-01-02(2020).